EP3228671A1 - Aerosollackzusammensetzung und damit beschichtetes metallisches mechanisches teil - Google Patents

Aerosollackzusammensetzung und damit beschichtetes metallisches mechanisches teil Download PDF

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Publication number
EP3228671A1
EP3228671A1 EP15866274.2A EP15866274A EP3228671A1 EP 3228671 A1 EP3228671 A1 EP 3228671A1 EP 15866274 A EP15866274 A EP 15866274A EP 3228671 A1 EP3228671 A1 EP 3228671A1
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EP
European Patent Office
Prior art keywords
meth
coating composition
mass
acid
alkyd resin
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP15866274.2A
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English (en)
French (fr)
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EP3228671B1 (de
EP3228671A4 (de
Inventor
Kenji Minami
Yasutaka FURUTA
Yuki Ogami
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NHK Spring Co Ltd
NHK Spring Production Co
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NHK Spring Co Ltd
NHK Spring Production Co
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Publication of EP3228671A1 publication Critical patent/EP3228671A1/de
Publication of EP3228671A4 publication Critical patent/EP3228671A4/de
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F283/00—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G
    • C08F283/02—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polycarbonates or saturated polyesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
    • B05D7/16—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies using synthetic lacquers or varnishes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F285/00—Macromolecular compounds obtained by polymerising monomers on to preformed graft polymers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L51/00—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
    • C08L51/08—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers grafted on to macromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D151/00—Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers
    • C09D151/08—Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers grafted on to macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
    • C09D167/08—Polyesters modified with higher fatty oils or their acids, or with natural resins or resin acids
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/02—Emulsion paints including aerosols
    • C09D5/021—Aerosols
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/02—Emulsion paints including aerosols
    • C09D5/024—Emulsion paints including aerosols characterised by the additives
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/08—Anti-corrosive paints
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/61—Additives non-macromolecular inorganic
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/66—Additives characterised by particle size
    • C09D7/69—Particle size larger than 1000 nm
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K3/00—Materials not provided for elsewhere
    • C09K3/30—Materials not provided for elsewhere for aerosols
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2203/00—Applications
    • C08L2203/16—Applications used for films
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives

Definitions

  • the present invention relates to an aerosol coating composition and a metallic mechanical part coated with the aerosol coating composition.
  • Various rust-preventive and anti-corrosive coatings are applied for the purpose of rust-prevention and anti-corrosion to various steel products used in a vehicle, an electric appliance, and an industrial machine and the like.
  • a matte type coating with less glossiness is preferably used as a coating material applied to a surface of the mechanical part.
  • a resin of the resin based microparticles includes, for example, an acryl resin, a polyolefin resin, a polyester resin, a polyamide resin or the like.
  • a representative matting agent is polyethylene wax having a mean particle diameter of 0.5 to 100 ⁇ m.
  • Patent Document 1 Japanese Unexamined Patent Application Publication No. 2009-197202
  • a matte type coating including polyethylene wax is applied to a mechanical part, and the mechanical part is fixed by a nut and a bolt, sliding occurs between the nut and bolt to cause a co-rotation phenomenon, resulting in the difficulty of fixing.
  • a co-rotation phenomenon is an event that occurs when a bolt and a nut are attached to a hole of a member to be wounded and fastened by a wrench etc., the bolt and the nut slip on the member to be fastened, and run idle. This makes the winding fastening difficult.
  • Wax such as polyethylene wax has an excellent matte effect for roughening a coating surface, while some types of wax have a lubricant effect.
  • a co-rotation phenomenon may occur when a member is fastened by a bolt and a nut.
  • the co-rotation may occur due to the following cause. That is, when a member is fastened by a bolt and a nut, wax particles in a coating on a surface of the member are pressed and crushed. This may form a lubricant coating, which may decrease frictional resistance to cause the co-rotation.
  • an aerosol type of a quick drying coating material when various types of metallic mechanical parts are coated for the purpose of rust-prevention and anti-corrosion at a manufacturing site of a vehicle or an electric appliance, it is preferable to use an aerosol type of a quick drying coating material from the viewpoint of the handling and simplicity properties.
  • a suitability of a matting agent for coating applicable to an aerosol type coating is demanded to be checked in terms of the stability of storage and clogging of a nozzle.
  • An object of the present invention is to provide an aerosol coating composition excellent in a matte effect and capable of preventing co-rotation from occurring, and a metallic mechanical part coated with the aerosol coating composition.
  • the present inventors have keenly investigated the above aerosol coating composition and eventually found out that specific inorganic microparticles are usable as the coating composition, which is capable of preventing the co-rotation and acting as a matting agent. This results in the achievement of the present invention.
  • the present invention has the following aspects.
  • An aerosol coating composition of the present invention may be applied onto a metallic mechanical part, excellent in a matte effect, and prevent the co-rotation from occurring.
  • An aerosol coating composition of the present invention is a coating composition used for an aerosol, containing a modified alkyd resin, inorganic microparticles and an organic solvent (hereinafter, appropriately referred to as "a coating composition").
  • a modified alkyd resin (e.g., non-aqueous dispersion resin, NAD resin) includes a dispersion stabilizer (B) which is soluble in an organic solvent (A), dispersion particles (D) made of a vinyl based polymer (C) which is insoluble in the organic solvent (A), and the organic solvent (A).
  • the organic solvent (A) is the same as the organic solvent contained in the coating composition.
  • the term of "the dispersion stabilizer (B) which is soluble in the organic solvent (A)” means that the dispersion stabilizer (B) does not cause any turbidity and segregation at 20°C when the solid content of the dispersion stabilizer (B) is adjusted at 50 mass% in the organic solvent (A), and simultaneously has a viscosity of 300P (poise) or less at 20°C.
  • the term of "the vinyl based polymer (C) which is insoluble in the organic solvent (A)” means that the vinyl based polymer (C) does not cause any turbidity and segregation at 20°C when the solid content of the vinyl based polymer (C) is adjusted at 50 mass% in the organic solvent (A), and simultaneously has a viscosity of 300P (poise) or more at 20°C.
  • the following solvents may be used as the organic solvent (A).
  • organic solvents (A) may be used alone or in combination of 2 or more types. Further, if the organic solvent (A) is volatile at room temperature, a coating composition excellent in quick drying may be provided.
  • the dispersion stabilizer (B) has a function for stably keeping the dispersion state of the dispersion particles (D) made of a vinyl based polymer (C) which is insoluble in the organic solvent (A).
  • the dispersion stabilizer (B) is made of a vinyl based polymer (E) which is soluble in the organic solvent (A) and/or an alkyd resin (F) which is soluble in the organic solvent (A), as described hereinafter.
  • the vinyl based polymer (E) which is soluble in the organic solvent (A) is prepared by using a vinyl based monomer described later and other polymerizable compound where necessary, and performing a commonly known and conventional polymerization reaction such as a solution polymerization in the presence of a radical polymerization initiator
  • polymerizable photostabilizers For the purpose of improving a weather resistance among the coating properties, various types of polymerizable photostabilizers may be used, including benzotriazole based acrylic monomers such as “RUVA-93” (product of Otsuka Chemical Co., Ltd.) and hindered amine based acrylic monomers such as "ADK STAB LA-82, ADK STAB LA-87” (products of ADECA Co.)
  • high molecular weight monomers i.e., macromolecular monomers having a copolymerizable terminal functional group
  • AA-6, AS-6, AN-6, AB-6, AA-714S products of TOAGOSEI CO., LTD.
  • a polymerizable unsaturated group-containing resin may be used where necessary, for example, including vinyl based polymers, polyester resins, alkyd resins, petroleum based resins, rosin esters, polyetherpolyols, all of which have a polymerizable unsaturated group.
  • Those polymerizable unsaturated group-containing resins may be used alone or in combination of 2 or more types.
  • the above described vinyl based monomers and/or polymerizable compounds may be used alone or in combination of 2 or more types.
  • a radical polymerization initiator may be used including, for example, azo-compounds such as 2,2'-azobisisobutyronitrile, 2,2'-azobis(2-methylbutironitrile or the like); various types of peroxides such as benzoyl peroxide, tert-butylperoxy-2-ethylhexanoate, tert-butylperoxy acetate, tert-butylperoxy benzoate, tert-butylcumyl peroxide, di-tert-butyl peroxide, cumene hydroperoxide, tert-butyl hydroperoxide, 1,1-bis(tert-butylperoxy)cyclohexane, tert-amylperoxy neodecanoate, tert-amylperoxy-2-ethylhexanoate, tert-amylperoxy-n-octoate, tert-amylperoxyisononan
  • chain transfer agents may be used as a molecular weight regulator where necessary, including lauryl mercaptan, octyl mercaptan, 2-mercaptoethanol, octyl thioglycolate, 3-mercaptopropionic acid or the like.
  • An alkyd resin (F) which is soluble in an organic solvent (A) may be obtained via esterifying at least one selected from a drying oil, a semi-drying oil, a drying fatty acid and a semi-drying fatty acid with a polyalcohol in the presence of a polybasic acid.
  • a drying oil, a semi-drying oil, a drying fatty acid and a semi-drying fatty acid may include, for example, various types of unsaturated fatty acids such as oleic acid, linoleic acid, linolenic acid, eleostearic acid, ricinoleic acid; "Pamorin 200, Pamorin 300" (synthetic drying fatty acids of Hercules Incorporated in the US); various types of drying oils or semi-drying oils such as a linseed oil, a tung oil, a dehydrated castor oil, a tall oil, a soybean oil, an olive oil, a safflower oil, a rice bran oil; and various types of fatty acids of the above drying oils and semi-drying oils. Those drying oils, semi-drying oils, drying fatty acids and semi-drying fatty acids may be used alone or in combination of 2 or more types.
  • non-drying oils such as a hydrogenated coconut oil, a coconut oil, and various types of fatty acids of the non-drying oils may be used in combination, without departing from the scope of the present invention and deteriorating the effect of the present invention.
  • the following acids may be used as a polybasic acid, for example.
  • polybasic acids may be used alone or in combination of 2 or more types.
  • a polyalcohol may include, for example, ethylene glycol, propylene glycol, 1,3-butylene glycol, 1,6-hexanediol, diethylene glycol, dipropylene glycol, neopentyl glycol, triethylene glycol, cyclohexanedimethanol, hydrogenated bisphenol A, glycerin, trimethylolethane, trimethylolpropane, pentaerythritol or the like.
  • Those polyalcohols may be used alone or in combination of 2 or more types.
  • a catalyst may be used where necessary.
  • a usable catalyst includes, for example, dibutyltin oxide, monobutyltin-2-ethylhexanoate, dibutyltin dilaurate, tin acetate, zinc acetate, lead naphthenate, tetrabutyl titanate, tetraisopropyl titanate, sodium hydroxide, potassium hydroxide, sodium acetate, lithium acetate, lithium hydroxide or the like.
  • the above catalysts may be used alone or in combination of 2 or more types.
  • the above described vinyl based polymer (E) soluble in the organic solvent (A) and/or the alkyd resin (F) soluble in the organic solvent (A) may be used alone or in combination of 2 or more types.
  • a preferable vinyl based polymer (E) include, for example, (meth)acrylic acid alkyl copolymer, (meth)acrylic acid alkyl-styrene copolymer, (meth)acrylic acid-(meth)acrylic acid alkyl copolymer, (meth)acrylic acid-(meth)acrylic acid alkyl- styrene copolymer, (meth)acrylic acid alkyl-(meth)acrylic acid-hydroxyalkyl copolymer, (meth)acrylic acid alkyl-(meth)acrylic acid hydroxyalkyl-styrene copolymer, acrylonitrile-(meth)acrylic acid alkyl copolymer, acrylonitrile-(meth)
  • a vinyl based polymer (C) which is insoluble in the organic solvent (A) may be obtained via using the above described vinyl based monomers and other polymerizable compounds where necessary, and performing a conventionally well known polymerization reaction such as solution polymerization in the presence of a radical polymerization initiator.
  • the organic solvent used in the solution polymerization may include, for example, aliphatic hydrocarbon such as a mineral spirit; aromatic hydrocarbon such as toluene, xylene; esters such as ethyl acetate, butyl acetate; ketones such as methyl isobutyl ketone, cyclohexanone; ether alcohols such as ethylene glycol monomethyl ether, diethylene glycol monomethyl ether; ether esters such as ethylene glycol monomethyl ether acetate; chlorine types such as 1,1,1-trichloroethane; and nitrogen-containing type such as dimethylformamide, N-methylpyrrolidone or the like.
  • aliphatic hydrocarbon such as a mineral spirit
  • aromatic hydrocarbon such as toluene, xylene
  • esters such as ethyl acetate, butyl acetate
  • ketones such as methyl isobutyl ketone, cyclohexanone
  • ether alcohols such as
  • Dispersion particles (D) made of a vinyl based polymer (C) insoluble in an organic solvent (A) are made of the above described vinyl based polymers (C) insoluble in the organic solvents (A).
  • the particles may be obtained via performing a conventionally well known polymerization reaction such as solution polymerization in the presence of the radical polymerization initiator.
  • the dispersion particles (D) have a mean particle diameter ranging from several tens nm to several ⁇ m.
  • a modified alkyd resin is prepared via including the above described dispersion stabilizer (B), the dispersion particles (D) made of the vinyl based polymer (C) and the organic solvent (A).
  • the coating composition of the present invention includes inorganic microparticles.
  • the inorganic microparticles contained in the coating roughen a surface of the coating to afford a matte effect thereon.
  • the inorganic microparticles are stably and uniformly dispersed in the coating composition.
  • the inorganic microparticles include silica (silicon oxide), titanium oxide, zinc oxide, alumina (aluminum oxide), calcium carbonate, talc, and clay or the like. Among those materials, silica is preferable in view of a particle diameter, a sedimentation property and availability. Further, multiple types of inorganic microparticles may be used in combination.
  • the usable mean particle diameter (i.e., mean primary particle diameter) of the inorganic microparticles is in the range from 1.0 ⁇ m to 10.0 ⁇ m, preferably 1.5 ⁇ m to 5.0 ⁇ m.
  • mean particle diameter is less than 1.0 ⁇ m, it is difficult to obtain a matte effect, while when it is more than 10.0 ⁇ m, defects like nozzle clogging tend to occur during the spray coating.
  • Synthetic amorphous silica is preferable as a type of silica of the suitable inorganic microparticles.
  • a method for preparing synthetic amorphous silica includes a dry process and a wet process. Both processes do not have specific limitations. However, a sedimentation method of wet processes is preferable from the viewpoint of the storage stability.
  • the inorganic microparticles it is preferable to more improve dispersion stability of the inorganic microparticles to the organic solvent so as to avoid sedimentation of the inorganic microparticles inside a spray-can during storage.
  • surfaces of the inorganic microparticles may be subjected to a functionalization treatment.
  • a dispersion agent or a chelate agent used for inorganic microparticles may be added thereto.
  • coloring agents such as a pigment and various types of additives may be added to the coating composition of the present invention, where necessary.
  • a pigment include, for example, color pigments such as titanium oxide, chrome yellow, phthalocyanine blue, phthalocyanine green, carbon black, mica, quinacridone red; and extender pigments such as kaolin, talc, diatomaceous earth, calcium carbonate or the like.
  • additives a hardening accelerator, a deforming agent, a surface conditioner, a sedimentation preventing agent, a thickener, a dispersing agent or the like may be used.
  • a hardening accelerator a deforming agent, a surface conditioner, a sedimentation preventing agent, a thickener, a dispersing agent or the like may be used.
  • the present invention is not limited to those additives.
  • the coating composition of the present invention contains the above described modified alkyd resin, the inorganic microparticles and the organic solvent.
  • a content of each component may be appropriately adjusted depending on a viscosity of a solution of each component.
  • An addition amount of the inorganic microparticles is preferably 0.1 to 5 mass% against 100 mass% of the coating composition, more preferably, 0.3 to 4 mass%.
  • the addition amount is less than 0.1 mass%, it is difficult to achieve a matte effect.
  • the addition amount is more than 5 mass%, the storage stability of the contents in a spray-can tends to be hardly achieved.
  • a solvent for a spray-can i.e., propellant
  • a solvent for a spray-can i.e., propellant
  • Dimethyl ether (DME) and liquid petroleum gas (LPG) etc. may be used as s solvent for spraying the coating composition (i.e., propellant) filled in a spray-can.
  • DME and LPG may be used in combination.
  • propellants are selected from one having good miscibility with the coating composition.
  • dimethyl ether (DME) is desirable due to the excellent miscibility with the coating composition.
  • Coating Composition / Propellant 30/70 to 60/40 vol%, more preferably 45/55 to 50/55 vol%.
  • a viscosity of the coating composition for a spray-can is represented by the flow time preferably of 12 sec to 35 sec, more preferably 15 sec to 25 sec, when measured at 20°C by Ford cup No.4 in conformity to ASTM D1200.
  • the measured time is more than 35 sec, it is difficult to perform uniform atomization, resulting in poor finish.
  • the measured time is less than 12 sec, a coating thus sprayed causes drips and thin coatings. Thereby, a thickness of the coating may not be secured.
  • the spray-can preferably has an inside pressure ranging from 0.5 to 0.5 Mpa.
  • the inside pressure is less than 0.3 Mpa, the injection becomes weak, preventing normal atomization.
  • the inside pressure is more than 0.5 Mpa, the spray-can may be deformed or cause explosion. Further, too strong discharge pressure may decrease the coating efficiency onto the material to be coated.
  • the aerosol coating composition of the present invention may be manufactured by using an appropriate known method.
  • a metallic mechanical part is coated with the aerosol coating composition of the present invention, it is possible to provide a metallic mechanical part having a coating excellent in a matte effect and it is hard to cause co-rotation.
  • the coating formed by the aerosol coating composition of the present typically has a degree of thickness ranging 5 to 50 ⁇ m.
  • soybean oil fatty acid 350 parts by mass
  • pentaerythritol 130 parts by mass
  • phthalic acid anhydride 160 parts by mass
  • xylene 30 parts by mass
  • the mixture was diluted with a mineral spirit (370 parts by mass) used as a solvent, thereby providing a resin solution (i) having a solid content of 60 mass%, a transparent pale brown color and a viscosity of 7P (poise).
  • the mineral spirit (260 parts by mass) was further added, thereby providing a modifies alkyd resin A having a solid content of 50 mass%, a turbid pale brown color and a viscosity of 53P (poise).
  • the rate of the dispersion stabilizer to the dispersion particles in the modified alkyd resin A was 59 / 41 in the solid content mass ratio.
  • a pigment, a matting agent, an additive, and a solvent were added to the obtained modified alkyd resins A and B, respectively, whereby the coating compositions listed in Table 1 were obtained.
  • the viscosity of each coating composition thus obtained was adjusted so that the flow time became 20 sec at 20°C by Ford cup No.4.
  • the respective components used in the experiments were listed as follows.
  • Coating compositions for spray-cans were prepared by using the respective coating compositions listed in Table 1 and dimethyl ether (DME) added thereto as a propellant.
  • the coating compositions were filled in the spray-cans, respectively.
  • a pressure inside the spray-can was adjusted at 0.44Mpa (25°C).
  • a tin plate having a longitudinal length of 70mm, a width of 150 mm, a thickness of 0.3 mm was prepared.
  • a surface of the tin plate was coated by using a spray-can filled with the coating composition for spray-can to form a coating.
  • the coating process was performed so that a coating thickness after drying was adjusted to be 25 ⁇ m.
  • the glossiness (or luster) of the coating over the tin plate was evaluated by 60° mirror surface glossiness method. Specifically, in accordance with JIS K 5600-4-7, the 60° mirror surface glossiness was measured by a glossimeter (micro-TRI-gloss BYK, incident and reflection angles of 60°). A value of the glossiness was calculated by the average data of 3 measurement points on the same tin plate. When the 60° mirror surface glossiness was equal to or less than 20, it was evaluated as "Excellent”. When the 60° mirror surface glossiness was more than 20 and equal to or less than 35, it was evaluated as "Good”. When the 60° mirror surface glossiness was more than 35, it was evaluated as "Poor".
  • FIGS.1A and 1B are dimensional drawings of a steel product used for evaluating co-rotation prevention.
  • Two steel plates 1 each having a longitudinal length of 100 mm, a wide length of 200 mm, and a thickness of 5 mm were prepared. Holes of ⁇ 13 mm were made on the respective two steel plates at the same center positions.
  • a bolt 2 having a regular hexagonal head with a diameter of ⁇ 21 mm, and a screw part with an outer diameter of ⁇ 12 mm, a length of 25 mm, a depth of 0.7 mm and a thread pitch of 1.25 mm/rev.; a nut 3 having the corresponding dimensions to the bolt 2; and a flat washer 4.
  • the respective spray-cans were filled with the coating compositions for spray-can, prepared from the various coating compositions thus produced. Then, the respective one sides of the two steel plates were coated using the respective spray-cans. The coating process was performed so that each coating had a thickness of 15 to 40 ⁇ m after drying treatment.
  • FIG.2 is a cross-sectional view for explaining a method for evaluating co-rotation prevention.
  • Two steel plates 1A and 1B were dowelled together so that the surfaces thus coated were located back to back facing outside. Then, a bolt 2 was inserted into the center holes of the steel plates 1A and 1B, a flat washer 4 was attached, and the dowelled steel plates 1A and 1B were lightly fastened by a nut 3. Then, one end of the dowelled two steel plates 1A and 1B was fixed as clamped by a vise 5. After that, the bolt 2 was tightly fastened by a torque wrench.
  • the co-rotation prevention was evaluated as Inferior (I). If the co-rotation occurred to generate continuous co-rotation failing to achieve the sufficiently tight fastening, the co-rotation prevention was evaluated as Poor (P). Three sets of the steel plate were used for evaluating the co-rotation prevention.
  • Examples 1 to 3 meet the constitutions of the present invention, providing excellent properties of both glossiness and co-rotation prevention.
  • Comparative Example 1 was experimentally produced the same as Example 1 except that polyethylene wax was used instead of silica. Comparative Example 1 had excellent glossiness but co-rotation prevention thereof was inferior to poor.
  • Comparative Example 2 was experimentally produced the same as Example 1 except that no silica was added. Comparative Example 2 had excellent co-rotation prevention but glossiness thereof was poor.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Nanotechnology (AREA)
  • Paints Or Removers (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
EP15866274.2A 2014-12-02 2015-12-02 Aerosollackzusammensetzung und damit beschichtetes metallisches mechanisches teil Not-in-force EP3228671B1 (de)

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JP2014244517A JP5863936B1 (ja) 2014-12-02 2014-12-02 エアゾール用塗料組成物とその塗膜を有する金属製機械部品
PCT/JP2015/083850 WO2016088789A1 (ja) 2014-12-02 2015-12-02 エアゾール用塗料組成物とその塗膜を有する金属製機械部品

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US10767075B2 (en) * 2017-09-15 2020-09-08 Nanoshield Technology Co., Ltd. Coating composition comprising nano-sol, and preparation method thereof
CN109135394A (zh) * 2018-08-02 2019-01-04 无锡金科涂装有限公司 一种用于喷油器和共轨喷涂工艺中的涂料稀释剂
CN110774494B (zh) * 2019-10-25 2021-12-31 安徽佳通乘用子午线轮胎有限公司 轮胎模具及其加工方法、轮胎的硫化方法及轮胎
JP7473120B2 (ja) * 2020-01-31 2024-04-23 日本ペイントホールディングス株式会社 塗料組成物および塗膜
JP2022121104A (ja) * 2021-02-08 2022-08-19 ナトコ株式会社 非水分散型塗料組成物、塗膜および物品

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JPS5527588B2 (de) * 1972-01-21 1980-07-22
JPS515656B2 (de) * 1972-07-08 1976-02-21
JPS5263939A (en) * 1975-11-21 1977-05-26 Hamani Toriyou Kk Production of coating composite for polypropylene moldings
JPS53147729A (en) * 1977-05-31 1978-12-22 Ota Toshuki Coating method
JPS5411148A (en) * 1977-06-28 1979-01-27 Nissan Motor Co Ltd Composition for protecting surface
JP2649559B2 (ja) * 1988-09-26 1997-09-03 大日本塗料株式会社 非水分散型樹脂組成物
JPH0662901B2 (ja) * 1989-06-14 1994-08-17 株式会社アサヒペン スエード調多彩模様エアゾル塗料組成物
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JP2002294140A (ja) 2001-03-29 2002-10-09 Dainippon Ink & Chem Inc 塗料組成物
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EP3228671B1 (de) 2019-09-18
US20170321063A1 (en) 2017-11-09
ES2759792T3 (es) 2020-05-12
WO2016088789A1 (ja) 2016-06-09
JP5863936B1 (ja) 2016-02-17
CA2969398A1 (en) 2016-06-09
CN107109109A (zh) 2017-08-29
MX2017007176A (es) 2018-01-30
CN107109109B (zh) 2019-06-25
HUE046757T2 (hu) 2020-04-28
EP3228671A4 (de) 2018-08-01
CA2969398C (en) 2020-04-28
US10501643B2 (en) 2019-12-10
JP2016108373A (ja) 2016-06-20
KR20170100496A (ko) 2017-09-04
KR102037186B1 (ko) 2019-10-29

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